Strap-On Pipe Marker for pipes 6" to 7 7/8" OD meets the requirements of the ASME (ANSI) A13.1 Standard for the identification of piping system contents. Pipe Marker provides 360° visibility. The Strap-on pipe marker is made of PVF Overlaminated Polyester, and is ideal for indoor or outdoor environments. The pipe marker can be used in either a current facility or new construction. May be applied to dirty, oily, greasy or even rough pipes. The and installs quickly and easily. Pipe marker comes as a flat sheet with slots to accommodate pre-cut fastener straps that are included.